A teacher at Roxana Senior High School in Madison County, Illinois, is facing backlash this week after teaching some children in his freshman-level math class about the mathematical particulars of cocaine use.The controversy stems from photos of the classroom's dry erase board that surfaced after Wednesday's lesson, which depict some rather unorthodox word problems for a high school math class.
"You take 600mg of cocaine, your body filters out 40% per hour, how high are you in three hours?" reads one question, as reported by KPLR. "Unfortunately, you can't pay your dealer, so she sets up a payment.…